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LifeScience2

Flashcards for LS2 past the midterm

QuestionAnswer
What is a SOMA? How big is it? What happens here? The soma is the cell body--it contains a nucleus and most cell organelles. It is 140 mm in diameter. It is where protein synthesis occurs.
What are DENDRITES? Dendrites are extensions from the soma. They are receptive sites for chemical signals.
What is the AXON HILLOCK and what does it do? It integrates information collected by the dendrites and initiates the action potential in a neuron.
What is an AXON ? Each neuron has ONLY one axon, which generates and conducts signals away from the soma. There are abundant microtubules on the axon for transport. It is also known as a nerve fiber.
What are AXON TERMINALS? It creates a synapse with target cells and contains neurotransmitter-filled vesicles.
What are GLIAL CELLS and what do they do? They are non-excitable and do not transmit electrical signals. THey help in nutrient supply, physical support, consume foreign particles, and insulate axons.
Created by: sciencegirlusa
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